Life History Diversity of Snake River Finespotted Cutthroat Trout: Managing for Persistence in a Rapidly Changing Environment

摘要: AbstractOver the last century, native trout have experienced dramatic population declines, particularly in larger river systems where habitats associated with different spawning life history forms been lost through habitat degradation and fragmentation. The resulting decrease diversity has affected capacity of populations to respond environmental variability disturbance. Unfortunately, because few large rivers are intact enough permit full expression diversity, it is unclear what patterns should be a conservation target. In this study, radiotelemetry was used identify migration Snake River Finespotted Cutthroat Trout Oncorhynchus clarkii behnkei upper River. Individuals were implanted radio tags October 2007 2008, monitored 2009. Radio-tagged cutthroat exhibited variation type location, distance, spawn timi...